tracing: Have all triggers expect a file parameter

tracing: Have all triggers expect a file parameter

When the triggers were first created, they may not have had a file
parameter passed to them and things needed to be done generically.

But today, all triggers have a file parameter passed to them. Remove the
generic code and add a "if (WARN_ON_ONCE(!file))" to each trigger.

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Tom Zanussi <zanussi@kernel.org>
Link: https://patch.msgid.link/20260206101351.609d8906@gandalf.local.home
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>